10.1021/acs.jpca.6b04641.s001
Lei Zhou
Lei
Zhou
Peter A. Tanner
Peter A.
Tanner
Lixin Ning
Lixin
Ning
Weijie Zhou
Weijie
Zhou
Hongbin Liang
Hongbin
Liang
Lirong Zheng
Lirong
Zheng
Spectral Properties and Energy Transfer between Ce<sup>3+</sup> and
Yb<sup>3+</sup> in the Ca<sub>3</sub>Sc<sub>2</sub>Si<sub>3</sub>O<sub>12</sub> Host: Is It an Electron Transfer Mechanism?
American Chemical Society
2016
electron transfer mechanism
energy conversion
3 Sc 2 Si 3 O 12 Host
garnet host
Energy Transfer
Yb
Spectral Properties
energy transfer
Electron Transfer Mechanism
Ce
energy transfer efficiency
2016-06-22 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Spectral_Properties_and_Energy_Transfer_between_Ce_sup_3_sup_and_Yb_sup_3_sup_in_the_Ca_sub_3_sub_Sc_sub_2_sub_Si_sub_3_sub_O_sub_12_sub_Host_Is_It_an_Electron_Transfer_Mechanism_/3473813
The downshifting
from Ce<sup>3+</sup> blue emission to Yb<sup>3+</sup> near-infrared
emission has been studied in the garnet host Ca<sub>2.8–2<i>x</i></sub>Ce<sub>0.1</sub>Yb<sub><i>x</i></sub>Na<sub>0.1+<i>x</i></sub>Sc<sub>2</sub>Si<sub>3</sub>O<sub>12</sub> (<i>x</i> = 0–0.36).
The downshifting does not involve quantum cutting, but one incident
blue photon is transferred from Ce<sup>3+</sup> to Yb<sup>3+</sup> with an energy transfer efficiency up to 90% when <i>x</i> = 0.36 for the Yb<sup>3+</sup> dopant ion. For <i>x</i> ≤ 0.15, a multiphonon-assisted electric dipole–electric
quadrupole mechanism of energy transfer dominates, while for the highest
concentration of Yb<sup>3+</sup> employed, the electron transfer mechanism
is confirmed. A temperature-dependent increase of the Ce<sup>3+</sup> → Yb<sup>3+</sup> energy transfer rate does not exclusively
indicate the electron transfer mechanism. The application of the material
to solar energy conversion is indicated.